1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
gizmo_the_mogwai [7]
3 years ago
6

Emission of which one of the following leaves both atomic number and mass number unchanged?

Chemistry
1 answer:
Alecsey [184]3 years ago
4 0

Answer: Gamma Radiation

Explanation:

The emission of Gamma rays does not cause a change in both the atomic and mass number. They are  electromagnetic radiation.

You might be interested in
How many liters of oxygen gas (O2) are needed to produce 100 kJ of energy at STP? 2C6H6(I) + 1502(g) —> 12CO2(g)+6H2O(g)+3909
makkiz [27]

Answer: 8.59 L of oxygen gas are needed to produce 100 kJ of energy at STP

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

Standard condition of temperature (STP)  is 273 K and atmospheric pressure is 1 atmosphere respectively.  

1 mole of every gas occupy volume at STP = 22.4 L

The balanced chemical reaction is:

2C_6H_6(I)+15O_2(g)\rightarrow 12CO_2(g)+6H_2O(g)

3909.9 kJ of of energy is produced by  = 15\times 22.4=336L

100 kJ of oxygen gas are needed to produce = \frac{336}{3909.9}\times 100=8.59L

7 0
3 years ago
Why is paper chromatography used for amino acids
vivado [14]

<em>Paper chromatography is especially useful in characterizing amino acids. The different amino acids move at differing rates on the paper because of differences in their R groups.</em>

5 0
2 years ago
Suppose that 25,0 mL of a gas at 725 mmHg and 298K is converted to
posledela

The new volume : 21.85 ml

<h3>Further explanation</h3>

Given

V1=25,0 ml

P1=725 mmHg

T1=298K is converted to

T2=273'K

P2=760 mmHg atm

Required

V2

Solution

Combined gas law :

\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}

Input the value :

V2=(P1.V1.T2)/(P2.T1)

V2=(725 x 25 ml x 273)/(760 x 298)

V2=21.85 ml

5 0
2 years ago
Solve pls brainliest
inna [77]

Answer:

Explanation:

The two green substances are not the same.  Most of their properties are different, except some are alike.  Since not all of their properties are matching, they are not the same substance.

I am not sure if this is what you were looking for, but if it is then I am happy to help.  

7 0
2 years ago
Which of the following is used for chemical symbols today? a. drawings c. letters b. icons d. numbers
devlian [24]

Answer:

Letters

Explanation:

For example, today we use the periodic table which is full of elements named with 1 or 2 letters. Like how Helium is He and Sodium is Na. Hope this helps!!!

3 0
3 years ago
Other questions:
  • The total mass of the protons in an atom of gold-198 is approximately
    6·1 answer
  • The red spheres represent oxygen atoms, and the blue spheres represent hydrogen atoms. Is this substance a compound?
    8·2 answers
  • A student noticed while doing the neutralization experiment that the calorimeter kept getting warmer. how would this error affec
    6·1 answer
  • The pressure caused by a sample of gas is 2.25 atm. 1 atm is
    9·1 answer
  • HEY ITS E AGAIN HELP ITS A TEST
    8·1 answer
  • How many moles of SO3<br> are in 2.4 x 1024<br> molecules of S03?
    11·1 answer
  • Which of the following most likely happens when thermal energy is removed from a chemical reaction?
    15·1 answer
  • How many grams of CO2 should be placed in a 250 mL container and -24°C to produce a pressure of 95K PA?
    14·1 answer
  • 79. Explain why the production of a gas does
    7·1 answer
  • The air in the balloon is heated up by leaving it in a warm place. Give two efects that this has on the air particles.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!